🏷️ Basic Information Identification Make: BMW Model: 5 Series Model Variant: 525i Model Generation: E34 Codes Chassis Code: E34 Engine Code Prefix: M50 👋 Introduction Market Position Positioning: The BMW 5 Series E34 represented the executive sedan segment, known for its blend of luxury, performance, and advanced engineering for its era. Competitive Analysis Competitors: Competed with vehicles like the Mercedes-Benz W124 E-Class, Audi 100/200, Jaguar XJ, and certain models from Lexus and Volvo. Key Features Design: Penned by legendary designer Ercole Spada, the E34 featured a more angular and aerodynamic design compared to its E28 predecessor, while retaining BMW's signature kidney grille. Engineering: Renowned for its sophisticated suspension, balanced chassis, and driver-focused ergonomics. Target Audience Audience: Professionals, enthusiasts, and those seeking a reliable and engaging luxury sedan. 📋 Manual Details Coverage Areas Covered Years: 1988, 1989, 1990, 1991 Page Count Page Count: 227 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, block, pistons, crankshaft, camshafts, timing, lubrication, cooling. Engine Management: Fuel injection (Bosch Motronic), ignition system, sensors, actuators, diagnostic procedures. Transmission Manual: Clutch, gearbox overhaul, shift mechanism, driveshafts. Transmission Automatic: Automatic transmission overhaul, hydraulic control, electronic control unit (if applicable for model years covered). Suspension: Front and rear suspension components, shock absorbers, springs, control arms, bushings, alignment procedures. Steering: Power steering system, steering rack, pump, linkages, troubleshooting. Brakes: Brake system components (discs, pads, calipers, master cylinder), ABS system (if equipped), hydraulic lines, bleeding procedures. Electrical System: Battery, charging system (alternator), starting system (starter motor), lighting, fuses, relays, wiring diagrams. Body And Chassis: Body panels, doors, hinges, latches, bumpers, interior trim, structural components. HVAC: Heating, ventilation, and air conditioning system components, refrigerant handling, troubleshooting. Fuel System: Fuel tank, fuel pump, fuel lines, fuel filter replacement. Exhaust System: Exhaust manifold, catalytic converter, mufflers, pipes. Wheels And Tires: Wheel torque specifications, tire pressure recommendations. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-ups, spark plug replacement. Troubleshooting: Diagnostic flowcharts, common problems and solutions, fault codes interpretation. Repair: Step-by-step repair instructions for all major mechanical and electrical systems. Overhaul: Complete disassembly, inspection, and reassembly procedures for engine and transmission. Diagnostics: Testing procedures for sensors, actuators, and control modules, use of diagnostic equipment. Wiring Diagrams: Detailed electrical schematics for all vehicle systems. Technical Depth Depth: Comprehensive coverage from basic maintenance to in-depth component overhaul and diagnostics. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans for clear text and diagrams, suitable for printing. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-6 Cylinder, DOHC Engine Displacement: 2.5 Liters (2494 cc) Engine Code: M50B25 Performance Horsepower: 189 hp @ 6000 rpm (approximate, may vary slightly by market/year) Torque: 245 Nm (181 lb-ft) @ 4200 rpm (approximate, may vary slightly by market/year) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection Fuel Type: Unleaded Premium Gasoline (91+ Octane) Engine Features Valvetrain: Double Overhead Camshafts (DOHC), 4 valves per cylinder. 🔧 Transmission Standard Transmission Type Standard: 5-Speed Manual Transmission Optional Transmission Type Optional: 4-Speed Automatic Transmission (ZF 4HP22) Features Drivetrain: Rear-Wheel Drive (RWD) 📐 Dimensions Exterior Length: 4710 mm (185.4 in) Width: 1751 mm (68.9 in) Height: 1410 mm (55.5 in) Weights Curb Weight: 1500-1600 kg (3307-3527 lbs) (approximate, depending on options) 🛡️ Safety Features Ratings Crash Testing: As per 1980s/1990s standards; modern ratings not directly comparable. Active Features ABS: Anti-lock Braking System (ABS) was available, often standard on later models or as an option. Traction Control: Optional ASC (Automatic Stability Control) or ASC+T (with Traction Control) became available later in the E34's lifecycle. Passive Features Airbags: Driver's side airbag became standard in later years of the E34 production, often optional initially. Seatbelts: Front and rear seat belts. 💡 Technology Features Infotainment Radio System: Factory AM/FM cassette player, optional CD changer. Onboard Computer: On-Board Computer (OBC) provided trip data, fuel economy, and system checks, often with a rudimentary display. Driver Assistance Cruise Control: Standard cruise control system. Connectivity Exterior Features: Optional power sunroof, power mirrors, headlamp washers. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, depending on driving conditions and oil type. Major Service Interval: Major services often recommended around 30,000, 60,000, and 100,000 miles, including checks of belts, hoses, fluid flushes, and component inspections. Fluid Specifications Engine Oil Type: SAE 5W-30 or 5W-40 Synthetic or Semi-Synthetic Oil meeting BMW Longlife-98 specifications (or equivalent API SG/SH). Coolant Type: BMW Blue Antifreeze/Coolant (ethylene glycol-based) mixed 50/50 with distilled water. Brake Fluid Type: DOT 4 Transmission Fluid Manual: API GL-4 or GL-5 Gear Oil (e.g., 75W-90) Transmission Fluid Automatic: BMW ATF LT-3 or equivalent (check specific transmission filter kit for exact spec) Power Steering...